EP1110957A1 - Benzazole derivatives and their use as JNK modulators - Google Patents

Benzazole derivatives and their use as JNK modulators Download PDF

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Publication number
EP1110957A1
EP1110957A1 EP99811207A EP99811207A EP1110957A1 EP 1110957 A1 EP1110957 A1 EP 1110957A1 EP 99811207 A EP99811207 A EP 99811207A EP 99811207 A EP99811207 A EP 99811207A EP 1110957 A1 EP1110957 A1 EP 1110957A1
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Prior art keywords
unsubstituted
substituted
benzothiazol
acetonitrile
pyrimidinyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP99811207A
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German (de)
English (en)
French (fr)
Inventor
Serge Halazy
Dennis Church
Montserrat Camps
Pascale Gaillard
Jean-Pierre Gotteland
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Applied Research Systems ARS Holding NV
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Applied Research Systems ARS Holding NV
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Priority to EP99811207A priority Critical patent/EP1110957A1/en
Priority to CA2394809A priority patent/CA2394809C/en
Priority to JP2001549390A priority patent/JP4782344B2/ja
Priority to PCT/EP2000/013006 priority patent/WO2001047920A1/en
Priority to IL15034600A priority patent/IL150346A0/xx
Priority to EEP200200318A priority patent/EE05456B1/et
Priority to DK00991229T priority patent/DK1240164T3/da
Priority to HU0204557A priority patent/HU229625B1/hu
Priority to BR0016911-0A priority patent/BR0016911A/pt
Priority to CZ20022169A priority patent/CZ300984B6/cs
Priority to EP00991229A priority patent/EP1240164B1/en
Priority to PT00991229T priority patent/PT1240164E/pt
Priority to AU31616/01A priority patent/AU780241B2/en
Priority to YUP-492/02A priority patent/RS51008B/sr
Priority to SI200030254T priority patent/SI1240164T1/xx
Priority to TR2003/02320T priority patent/TR200302320T4/xx
Priority to UA2002065195A priority patent/UA73151C2/uk
Priority to SK898-2002A priority patent/SK287546B6/sk
Priority to US10/168,718 priority patent/US7259162B2/en
Priority to AT00991229T priority patent/ATE254123T1/de
Priority to PL00356634A priority patent/PL356634A1/xx
Priority to KR1020077008852A priority patent/KR20070047853A/ko
Priority to MXPA02006242A priority patent/MXPA02006242A/es
Priority to CNB008187045A priority patent/CN1252067C/zh
Priority to EA200200708A priority patent/EA007152B1/ru
Priority to TR2002/01509T priority patent/TR200201509T2/xx
Priority to KR1020027007971A priority patent/KR100736012B1/ko
Priority to ES00991229T priority patent/ES2206351T3/es
Priority to DE60006580T priority patent/DE60006580T2/de
Priority to NZ519423A priority patent/NZ519423A/en
Priority to ARP000106912A priority patent/AR029215A1/es
Publication of EP1110957A1 publication Critical patent/EP1110957A1/en
Priority to ZA200204427A priority patent/ZA200204427B/en
Priority to HR20020496A priority patent/HRP20020496B1/xx
Priority to BG106830A priority patent/BG65986B1/bg
Priority to IL150346A priority patent/IL150346A/en
Priority to NO20022997A priority patent/NO323146B1/no
Priority to HK03107978A priority patent/HK1055730A1/xx
Priority to US11/779,585 priority patent/US7470686B2/en
Withdrawn legal-status Critical Current

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Definitions

  • the present invention is related to benzazole derivatives and its tautomers for use as pharmaceutically active compounds, as well as pharmaceutical formulations containing such benzazole derivatives.
  • the present invention is related to benzazole derivatives displaying a substantial modulatory, notably an inhibitory activity of the JNK (Jun-Kinase) pathway and which are therefore particularly useful in the treatment of disorders of the autoimmune and the neuronal system.
  • the present invention is furthermore related to novel benzazole derivatives as well as to methods of their preparation.
  • Apoptosis denotes the complex contortions of the membrane and organelles of a cell as it undergoes the process of programmed cell death. During said process, the cell activates an intrinsic suicide program and systematically destroys itself. The following series of events can be observed :
  • the nucleus also goes through a characteristic pattern of morphological changes as it commits genetic suicide, the chromatin condenses and is specifically cleaved to fragments of DNA.
  • Neuronal cell death plays an important role in ensuring that the nervous system develops normally. It appears that the death of developing neurones depends on the size of the target that they innervate: cells with fewer synaptic partners are more likely to die than those that have formed multiple synapses. This may reflect a process, which balances the relative number of pre- to post-synaptic neurones in the developing nervous system. Although neuronal cell death was assumed to be apoptotic, it was only recently that neurones in developing rodent brain were conclusively shown to undergo apoptosis as classified by morphology and DNA fragmentation. As cell death during development is clearly not a pathological process, it makes sense that cells actually cease to exist.
  • Neuronal death occurs via either apoptotic or necrotic processes following traumatic nerve injury or during neurodegenerative diseases. Multiple components are emerging as key players having a role in driving neuronal programmed cell death. Amongst the components leading to neuronal apoptosis are members of the SAPK/JNK being a subfamily of MAP Kinases (MAPKs).
  • MAPKs MAP Kinases
  • MAPKs mitogen-activated protein kinases
  • MAPKs are serine/threonine kinases that are activated by dual phosphorylation on threonine and tyrosine residues.
  • Said pathways consist of kinase cascades leading to activation of the ERKs (extracellular regulated kinases), the JNKs (c-Jun N-terminal kinases), and the p38/CSBP kinases. While both the JNK and p38 pathways are involved in relaying stress-type extramolecular signals, the ERK pathway is primarily responsible for transducing mitogenic/differentiation signals to the cell nucleus.
  • SAPK cascades represent a sub-family of the mitogen-activating protein kinase family, that are activated by different external stimuli including DNA damage following UV irradiation, TNF- ⁇ , IL-1 ⁇ , ceramide, cellular stress, and reactive oxygen species and have distinct substrate specificities.
  • Signal transduction via MKK4/JNK or MKK3/p38 results in the phosphorylation of inducible transcription factors, c-Jun and ATF2, which then act as either homodimers or heterodimers to initiate transcription of down-stream effectors.
  • c-Jun is a protein that is forming homodimers and heterodimers (with e.g. c-Fos) to produce the transactivating complex AP-which is required for the activation of many genes (e.g. matrix metalloproteinases) involved in the inflammatory response.
  • the JNKs were discovered when it was found that several different stimuli such as UV light and TNF- ⁇ stimulated phosphorylation of c-Jun on specific serine residues in the N-terminus of the protein.
  • MAP kinase kinase 3 MKK3
  • MKK4 MAP kinase kinase 4
  • c-Jun part of the MKK-4 cascade
  • JNK and p38 undergo sustained activation while ERKs are inhibited. Consistent with this JNK3 KO mice are resistant to excitotoxicity induced apoptosis in the hippocampus and more importantly they display greatly reduced epileptic like seizures in res-ponse to excitotoxicity as compared to normal animals ( Nature 1997 , 389, 865-870).
  • JNK signalling pathway is implicated in cell proliferation and could play an important role in autoimmune diseases ( Immunity, 1998 , 9 , 575-585; Current Biology, 1999 , 3, 116-125) which are mediated by T-cell activation and proliferation.
  • Naive (precursor) CD4 + helper T (Th) cells recognise specific MHC-peptide complexes on antigen-presenting cells (APC) via the T-cell receptor (TCR) complex.
  • APC antigen-presenting cells
  • TCR T-cell receptor
  • a costimulatory signal is provided at least partially by the ligation of CD28 expressed on T-cells with B7 proteins on APC. The combination of these two signals induces T-cell clonal expression.
  • CD4 + T cells After 4-5 days of proliferation, precursor of CD4 + T cells differentiate into armed effector Th cells that mediate the functions of the immune system. During the differentiation process, substantial reprogramming of gene expression occurs.
  • Th1 cells produce IFN ⁇ and LT (TNF- ⁇ ), which are required for cell-mediated inflammatory reactions; Th2 cells secrete IL-4, IL-5, IL-6, IL-10 and IL-13, which mediate B cell activation and differentiation. These cells play a central role in the immune response.
  • the JNK MAP Kinase pathway is induced in Th1 but not in Th2 effector cells upon antigen stimulation. Furthermore, the differen-tiation of precursor CD4 + T cells into effector Th1 but not Th2 cells is impaired in JNK2-deficient mice. Therefore, in recent years it has been realized that the JNK kinase pathway plays an important role in the balance of Th1 and Th2 immune response through JNK2.
  • JNK-interacting protein 1 JIP-1
  • C 1 -C 6 -alkyl refers to monovalent alkyl groups having 1 to 6 carbon atoms. This term is exemplified by groups such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-hexyl and the like.
  • Aryl refers to an unsaturated aromatic carbocyclic group of from 6 to 14 carbon atoms having a single ring (e.g. phenyl) or multiple condensed rings (e.g. naphthyl). Preferred aryl include phenyl, naphthyl and the like.
  • Heteroaryl refers to a monocyclic heteromatic, or a bicyclic or a tricyclic fused-ring heteroaromatic group.
  • Particular examples of heteroaromatic groups include optionally substituted pyridyl, pyrrolyl, furyl, thienyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyrazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,3-oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl, 1,3,4-oxadiazolyl,1,3,4-triazinyl, 1,2,3-triazinyl, benzofuryl, [2,3-dihydro]benzofuryl, isobenzofuryl, benzothienyl, benzotriazolyl, isobenzothienyl, indolyl, iso
  • alkenyl refers to alkenyl groups preferable having from 2 to 6 carbon atoms and having at least 1 or 2 sites of alkenyl unsaturation.
  • Alkynyl refers to alkynyl groups preferably having 2 to 6 carbon atoms and having at least 1-2 sites of alkynyl unsaturation, preferred alkynyl groups include ethynyl (-C ⁇ CH), propargyl (-CH 2 C ⁇ CH), and the like.
  • Alcohol refers to the group -OC(O)R where R includes C 1 -C 6 -alkyl, aryl or heteroaryl.
  • Alkoxy refers to the group “C 1 -C 6 -alkyl-O-” or “-O-aryl” or “O-heteroaryl”. Preferred alkoxy groups include by way of example, methoxy, ethoxy, phenoxy and the like.
  • Alkoxycarbonyl refers to the group -C(O)OR where R includes "C 1 -C 6 -alkyl” or “aryl” or “heteroaryl”.
  • Aminocarbonyl refers to the group -C(O)NRR' where each R, R' includes independently hydrogen or C 1 -C 6 -alkyl or aryl or heteroaryl.
  • Aminoacyl refers to the group -NR(CO)R' where each R, R' is independently hydrogen or C 1 -C 6 -alkyl or aryl or heteroaryl.
  • Halogen refers to fluoro, chloro, bromo and iodo atoms.
  • Sulfonyl refers to group “R-SO 2 " wherein R is selected from H, aryl, heteroaryl, C 1 -C 6 -alkyl, C 1 -C 6 -alkyl substituted with halogens e.g. a CF 3 -SO 2 group.
  • Thioalkoxy refers to groups "C 1 -C 6 -alkyl-S-", or "aryl-S-” or “heteroaryl-S-”. Preferred thioalkoxy groups include thiomethoxy, thioethoxy, and the like.
  • Substituted or unsubstituted Unless otherwise constrained by the definition of the individual substituent, the above set out groups, like alkyl, heteroaryl, alkenyl, alkynyl and aryl etc. groups can optionally be substituted with from 1 to 5 substituents selected from group consisting of C 1 -C 6 -alkyl, acetoxy, alkoxy, alkenyl, alkynyl, amino, aminoacyl, aminocarbonyl, alkoxycarbonyl, aryl, carboxyl, cyano, halogen, hydroxy, nitro, sulfoxy, sulfoxy, thioalkoxy, trihalomethyl and the like.
  • “Pharmaceutically acceptable salts or complexes” refers to salts or complexes that retain the desired biological activity of the below-identified compounds of formula I and exhibit minor or no undesired toxicological effects. Examples of such salts include, but are not restricted to acid addition salts formed with inorganic acids (e.g.
  • hydrochloric acid hydrobromic acid, sulfuric acid, phosphoric acid, nitric acid, and the like
  • salts formed with organic acids such as acetic acid, oxalic acid, tartaric acid, succinic acid, malic acid, fumaric acid, maleic acid, ascorbic acid, benzoic acid, tannic acid, pamoic acid, alginic acid, polyglutamic acid, naphthalene sulfonic acid, naphthalene disulfonic acid, and polygalacturonic acid.
  • Said compounds can also be administered as pharmaceutically acceptable quaternary salts known by a person skilled in the art, which specifically include the quarternary ammonium salt of the formula -NR,R',R" + Z - , wherein R, R', R" is independently hydrogen, alkyl, or benzyl, and Z is a counterion, including chloride, bromide, iodide, -O- alkyl, toluenesulfonate, methylsul-fonate, sulfonate, phosphate, or carboxylate (such as benzoate, succinate, acetate, glycolate, maleate, malate, fumarate, citrate, tartrate, ascorbate, cinnamoate, mandeloate, and diphenylacetate).
  • quaternary salts known by a person skilled in the art, which specifically include the quarternary ammonium salt of the formula -NR,R',R" + Z - , wherein R, R
  • “Pharmaceutically active derivative” refers to any compound that upon administration to the recipient, is capable of providing directly or indirectly, the activity disclosed herein.
  • benzazole derivatives according to formula I are suitable pharmaceutically active agents, by effectively modulating, in particular by inhibiting the action of JNK's, notably of JNK 2 and/or 3.
  • the compounds according to the present invention are those of formula I.
  • G is selected from the group comprising or consisting of unsubstituted or substituted aryl or heteroaryl substituents, unsubstituted or substituted 3-8-membered saturated or unsaturated ring systems containing at least one heteroatom selected from N, O or S; said 3-8-membered ring system may be fused with a substituted or unsubstituted aryl or heteroaryl system thus providing a bicyclic system.
  • R 1 is selected from the group comprising or consisting of hydrogen, unsubstituted or substituted C 1 -C 6 -alkoxy, unsubstituted or substituted C 1 -C 6 -thioalkoxy, unsubstituted or substituted C 1 -C 6 -alkyl, unsubstituted or substituted C 2 -C 6 -alkenyl, unsubstituted or substituted C 2 -C 6 -alkynyl, primary, secondary or tertiary amino groups, aminoacyl, aminocarbonyl, unsubstituted or substituted C 1 -C 6 alkoxycarbonyl, unsubstituted or substituted aryl, unsubstituted or substituted heteroaryl, carboxyl, cyano, halogen, hydroxy, nitro, sulfoxy, sulfonyl, sulfonamide, unsubstituted or substituted hydrazides.
  • R 1 are hydrogen, halogen, C 1 -C 6 -alkyl and C 1 -C 6 alkoxy groups.
  • R 2 is selected from the group comprising or consisting of hydrogen, unsubstituted or substituted C 1 -C 6 -alkyl, unsubstituted or substituted C 2 -C 6 -alkenyl, unsubstituted or substituted C 2 -C 6 -alkynyl, unsubstituted or substituted C 1 -C 6 -alkyl-aryl, unsubstituted or substituted aryl or heteroaryl, unsubstituted or substituted C 1 -C 6 -alkyl-heteroaryl, -C(O)-OR 3 , -C(O)- R 3 , -C(O)-NR 3 R 3' , -(SO 2 )R 3 , whereby R 3 and R 3' are independently selected from the group comprising or consisting of hydrogen, unsubstituted or substituted C 1 -C 6 alkyl, unsubstituted or substituted C 2 -C 6 alken
  • the present invention also includes the tautomers, its geometrical isomers, the optical active forms, enantiomers, diastereomers of compounds according to formula I, as well as their racemates and also pharmaceutically acceptable salts, as well as the pharmaceutically active derivatives of benzazole of formula I.
  • R 3 and R 3' are hydrogen, C 1 -C 6 alkyl, aryl, heteroaryl, C 1 -C 6 -alkyl aryl, C 1 -C 6 -alkyl heteroaryl. Most preferred R 3 and R 3' is hydrogen or C 1 -C 6 alkyl.
  • Such tautomers mentioned herein are only those wherein R 2 and/or R 0 are hydrogen. Said tautomers undergo transformation in solution and an equilibrium between the benzazoles of formula Ia and Ib is established with those of formula IIa and IIb.
  • all of the above mentioned aryl or heteroaryl substituents could optionally be further substituted by at least one of the groups selected from substituted or unsubstituted C 1 -C 6 -alkyl, like trihalomethyl, substituted or unsubstituted C 1 -C 6 -alkoxy, acetoxy, substituted or unsubstituted C 2 -C 6 -alkenyl, substituted or unsubstituted C 2 -C 6 -alkynyl, amino, aminoacyl, aminocarbonyl, C 1 -C 6 -alkoxycarbonyl, aryl, carboxyl, cyano, halogen, hydroxy, nitro, sulfonyl, sulfoxy, C 1 -C 6 -thioalkoxy.
  • said aryl or heteroaryl groups are substituted by halogen, hydroxy, nitro, sulfonyl, e.g. a trifluoromethyls
  • Particularly preferred benzazole derivatives are those wherein G is an unsubstituted or substituted pyrimidinyl group wherein L is selected from the group comprising or consisting of hydrogen, unsubstituted or substituted C 1 -C 6 alkyl, unsubstituted or substituted C 1 -C 6 alkoxy, unsubstituted or substituted C 1 -C 6 thioalkoxy, unsubstituted or substituted C 2 -C 6 alkenyl, unsubstituted or substituted C 2 -C 6 alkynyl, primary, secondary or tertiary amino groups, aminoacyl, aminocarbonyl, amino-(C 1 -C 10 )alkyl, amino- unsubstituted or substituted (C 1 -C 10 )-alkyl-aryl, amino-unsubstituted or substituted (C 1 -C 10 )alkyl-heteroaryl, unsubstituted or substituted C 1
  • Particularly preferred benzazole derivatives are those wherein L is a substituted or unsubstituted (C 1 -C 10 )-alkyl group.
  • benzazole derivatives are those wherein L is a group -N(R a , R b ) or -OR a , with R a and R b being each independently selected from the group consisting of H, unsubstituted or substituted (C 1 -C 10 )-alkyl, unsubstituted or substituted C 1 -C 6 alkyl-aryl, unsubstituted or substituted C 1 -C 6 -alkyl-heteroaryl, unsubstituted or substituted aryl or heteroaryl and unsubstituted or substituted 4-8 membered saturated or unsaturated cycloalkyl.
  • R a and R b being each independently selected from the group consisting of H, unsubstituted or substituted (C 1 -C 10 )-alkyl, unsubstituted or substituted C 1 -C 6 alkyl-aryl, unsubstituted or substituted C 1 -C 6
  • n is 1 to 10, preferably 1 to 6
  • R 5 and R 5' are independently selected from each other from the group consisting of H, substituted or unsubstituted C 1 -C 10 alkyl, substituted or unsubstituted aryl or heteroaryl, substituted or unsubstituted C 1 -C 6 alkyl-aryl and substituted or unsubstituted C 1 -C 6 -alkylheteroaryl. Most preferred R 5' is an unsubstituted or substituted imidazolyl.
  • Particularly preferred benzazole derivatives are those wherein X is S, R 1 and R 2 are H.
  • Specific examples of compounds of formula I include the following:
  • the most preferred compounds are those which are selected from the group consisting of:
  • a further aspect of the present invention is related to the use of the benzazole derivatives according to formula I for the preparation of pharmaceutical compositions for the modulation ⁇ notably of the inhibition - of the JNK pathway associated disorders, in particular against neuronal disorders and/or against disorders of the immune system as well as said pharmaceutical compositions themselves.
  • Preferred JNK pathways are the JNK2 and/or JNK3.
  • the compounds of formula I are suitable to be used as a medicament.
  • Some few of the tautomer compounds falling under the above set out formula II have been disclosed prior to the filing of the present application. However, for most of them no medical or biological activity whatsoever has been described so far.
  • Said diseases include disorders of the autoimmune system and neuronal system of mammals, notably of human beings.
  • the compounds according to formula I are useful for the modulation of the JNK pathway, more specifically for the treatment or prevention of disorders associated with abnormal expression or activity of JNK, notably of JNK2 and/or 3.
  • Such an abnormal expression or activity of JNK could be triggered by numerous stimuli (e.g. stress, septic schock, oxidative stress, cytokines) and could lead to out-of-control apoptosis or autoimmune diseases that is frequently involved in the below enumerated disorders and diseases.
  • the compounds according to formula I could be used for the treatment of disorders by modulating the JNK pathways.
  • Said modulation of the JNK pathway could involve its activation, but preferably it involves the inhibition of the JNK pathways, notably of the JNK2 and/or 3.
  • the compounds according to formula I could be employed alone or in combination with further pharmaceutical agents.
  • the compounds pursuant to formula I are useful for the treatment or prevention of immuno- and/or neuronal-related diseases or pathological states in which inhibition of JNK2 and/or JNK3 plays a critical role such as epilepsy; neurodegenerative diseases including Alzheimer's disease, Huntington's disease, Parkinson's disease; retinal diseases; spinal cord injury; head trauma, autoimmune diseases including multiple sclerosis, inflammatory bowel disease (IBD), rheumatoid arthritis; asthma; septic shock; transplant rejection; cancers including breast, colorectal, pancreatic and cardiovascular diseases including stroke, cerebral ischemia, arterosclerosis, myocordial infarction, myocordial reperfusion injury.
  • neurodegenerative diseases including Alzheimer's disease, Huntington's disease, Parkinson's disease
  • retinal diseases spinal cord injury
  • head trauma autoimmune diseases including multiple sclerosis, inflammatory bowel disease (IBD), rheumatoid arthritis
  • asthma septic shock
  • transplant rejection cancers including breast, colorectal, pancre
  • the compounds according to formula I do show a considerable activity as inhibitors of JNK2 and/or 3.
  • the compounds according to the invention are essentially inactive in view of 2 further MAP Kinases, i.e. p38 and/or ERK2, belonging incidentally to the same family as JNK2 and 3.
  • the compounds according to the present invention offer the possibility to selectively modulate the JNK pathway, and in particular to come to grips with disorders related to the JNK pathways, while being essentially inactive with regard to other targets like said p38 and ERK2, so that they could indeed be viewed as selective inhibitors.
  • these related enzymes are generally involved in different disorders, so that for the treatment of a distinct disorder, it is desired to employ a correspondingly selective medicament.
  • Still a further aspect of the present invention is related to the actually novel benzazole derivatives. Thereby, only some tautomer compounds according to formula II have been disclosed prior to the filing of the present application, whereby nothing is known for the benzazole compounds according to formula I.
  • DE 198'05'544 discloses dye compounds of formula I, wherein X is O, S or NR, with R being H, C 1 -C 4 alkyl or aryl, and wherein G is a 4-diazo-, or 4-diazoniumphenyl group.
  • the entirely novel benzazole derivatives are those of the general formula I and its tautomers according to formula II whereby the above identified known compounds are excluded.
  • Still a further object of the present invention is a process for preparing the novel benzothiazole derivatives according to formula I.
  • a general synthetic access to the compounds according to formula I is the following :
  • the intermediate compound IV' could be transformed in the following way :
  • the starting material III is thereby reacted with an electrophilic compound G-Y, whereby Y is a suitable leaving group.
  • G-Y an electrophilic compound
  • Y is a suitable leaving group.
  • the choice of Y, Y', the reaction method, the reaction conditions, solvents, catalysts will depend on the nature of G and are appropriately selected according to the knowledge of a person skilled in the art. Said method also comprises any modification of G following condensation of G-Y with compound III.
  • Preferred compounds of formula I are those wherein G is a heteroaryl group, notably a pyrimidinyl group . wherein L is as described above. Such compounds are preferably obtained according to the schemes I-III:
  • benzothiazole derivatives examplified in this invention can be prepared from readily available starting materials using the following general methods and procedures. It will be appreciated that where typical or preferred experimental conditions (i.e., reaction temperatures, time, moles of reagents, solvents, etc.) are given, other experimental conditions can also be used unless otherwise stated. Optimum reaction conditions may vary with the particular reactants or solvents used, but such conditions can be determined by one skilled in the art by routine optimisation procedures.
  • the compounds of formula III may be converted to the compounds of formula IV by treatment of the starting compounds with a base such as sodium hydride, potassium hydride and the like in an anhydrous inert atmosphere in polar solvents like DMF or THF at a temperature in the range of about -78°C to 25°C (Chabaka L.M. et al, Pol. J. Chem.
  • unsubstituted or substituted halogenated heteroaryl derivatives of formula V as described above being most preferably pyridine, pyrimidine derivatives, in solvents such as DMF or THF and then gradually warming the mixture to a temperature in the range of about 25°C to 70°C for about 1 to 18 hours to afford compounds of formula IV wherein R 1 , and X are as described above and R 2 is hydrogen.
  • Benzazole of formula III are either commercially available, such as from Maybridge Chemical Co. Ltd or can be prepared from commercially available compounds by conventional procedures (Loew et al. US4,064,136, Lorenz M, DE1963542), wherein R 1 and X are as defined above and are most preferably respectively H and S.
  • Unsubstituted or substituted halogenated heteroaryl of formula V are also either commercially available, such as from Aldrich, Fluka, Sigma and the like or can be prepared from known compounds by conventional procedures (WO 98/24782).
  • Preferred halogenated heteroaryl as starting materials include 2,4-dichloropyrimidine, 2-chloropyridine and the like.
  • the reaction is performed in solution in solvents such as DMF, NMP, DMSO or alcohols for example EtOH, MeOH or iPrOH, most preferably in EtOH, in the presence of an organic base such as Et 3 N, DIPEA or the like, most preferably Et 3 N, at a temperature in the range of about 25 to 80°C.
  • solvents such as DMF, NMP, DMSO or alcohols for example EtOH, MeOH or iPrOH, most preferably in EtOH, in the presence of an organic base such as Et 3 N, DIPEA or the like, most preferably Et 3 N, at a temperature in the range of about 25 to 80°C.
  • the starting compounds are heated at 70°C in solution in EtOH in the presence of Et 3 N.
  • Amines are either commercially available or can be prepared from known compounds by conventional procedures known by one skilled in the art.
  • Preferred amines as starting materials include methylamine, N,N-dimethylaminoethylamine, morpholine histamine and the like.
  • Alcohols or thioalcohols are either commercially available or can be prepared from known compounds by conventional procedures known by one skilled in the art
  • Preferred alcohols or thioalcohols as starting materials include MeOH, MeSH and the like.
  • the compounds of formula I' wherein R 2 is hydrogen and R 1 and X are as above described, most preferably H and S, may be converted to the compounds of formula I" wherein R 2 is different from hydrogen by the treatment of the starting compound with electrophiles Y'-R 2 such as such as alkyl or benzyl halides and acyl chlorides at a temperature in the range of 25°C to 80°C in the presence of a base such as potassium carbonate, sodium hydroxide, sodium hydride and the like in a solvent such as DMSO, DMF, acetone and the like in an anhydrous inert atmosphere.
  • the starting compounds are shaken at 25°C in solution in DMSO in the presence of potassium carbonate.
  • Electrophiles are either commercially available or can be prepared from known compounds by conventional procedures known by one skilled in the art.
  • Preferred electrophiles as starting materials include methyl iodide and acetyl chloride.
  • a final aspect of the present invention is related to the use of the compounds according to formula I for the modulation of the JNK pathway, the use of said compounds for the preparation of pharmaceutical compositions for the modulation of the JNK pathway as well as the formulations containing the active compounds according to formula I.
  • Said modulation of the JNK pathway is viewed as a suitable approach of treatment for various disorders.
  • the benzazole derivatives of the present invention are typically administered in the form of a pharmaceutical composition.
  • pharmaceutical compositions comprising a compound of formula I and a pharmaceutically acceptable carrier, diluent or excipient therefore are also within the scope of the present invention.
  • the present invention provides compounds for use as a medicament.
  • the invention provides the compounds of formula I for use as JNK inhibitor, notably for JNK2 and JNK3, for the treatment of disorders of the immune as well as the neuronal system of mammals, notably of humans, either alone or in combination with other medicaments.
  • compositions and unit dosages thereof may be placed into the form of pharmaceutical compositions and unit dosages thereof, and in such form may be employed as solids, such as tablets or filled capsules, or liquids such as solutions, suspensions, emulsions, elixirs, or capsules filled with the same, all for oral use, or in the form of sterile injectable solutions for parenteral (including subcutaneous use).
  • Such pharmaceutical compositions and unit dosage forms thereof may comprise ingredients in conventional proportions, with or without additional active compounds or principles, and such unit dosage forms may contain any suitable effective amount of the active ingredient commensurate with the intended daily dosage range to be employed.
  • the benzazole derivatives of this invention are typically administered in the form of a pharmaceutical composition.
  • Such compositions can be prepared in a manner well known in the pharmaceutical art and comprise at least one active compound.
  • the compounds of this invention are administered in a pharmaceutically effective amount.
  • the amount of the compound actually administered will typically be determined by a physician, in the light of the relevant circumstances, including the condition to be treated, the chosen route of administration, the actual compound administered, the age, weight, and response of the individual patient, the severity of the patient's symptoms, and the like.
  • compositions of these inventions can be administered by a variety of routes including oral, rectal, transdermal, subcutaneous, intravenous, intramuscular, and intranasal.
  • the compounds are preferably formulated as either injectable or oral compositions.
  • the compositions for oral administration can take the form of bulk liquid solutions or suspensions, or bulk powders. More commonly, however, the compositions are presented in unit dosage forms to facilitate accurate dosing.
  • unit dosage forms refers to physically discrete units suitable as unitary dosages for human subjects and other mammals, each unit containing a predetermined quantity of active material calculated to produce the desired therapeutic effect, in association with a suitable pharmaceutical excipient.
  • Typical unit dosage forms include prefilled, premeasured ampoules or syringes of the liquid compositions or pills, tablets, capsules or the like in the case of solid compositions.
  • the benzazole compound is usually a minor component (from about 0.1 to about 50% by weight or preferably from about 1 to about 40% by weight) with the remainder being various vehicles or carriers and processing aids helpful for forming the desired dosing form.
  • Liquid forms suitable for oral administration may include a suitable aqueous or nonaqueous vehicle with buffers, suspending and dispensing agents, colorants, flavors and the like.
  • Solid forms may include, for example, any of the following ingredients, or compounds of a similar nature: a binder such as microcrystalline cellulose, gum tragacanth or gelatine; an excipient such as starch or lactose, a disintegrating agent such as alginic acid, Primogel, or corn starch; a lubricant such as magnesium stearate; a glidant such as colloidal silicon dioxide; a sweetening agent such as sucrose or saccharin; or a flavoring agent such as peppermint, methyl salicylate, or orange flavoring.
  • a binder such as microcrystalline cellulose, gum tragacanth or gelatine
  • an excipient such as starch or lactose, a disintegrating agent such as alginic acid, Primogel, or corn starch
  • Injectable compositions are typically based upon injectable sterile saline or phosphatebuffered saline or other injectable carriers known in the art.
  • the benzazole derivatives of formula I in such compositions is typically a minor component, frequently ranging between 0.05 to 10% by weight with the remainder being the injectable carrier and the like.
  • the compounds of this invention can also be administered in sustained release forms or from sustained release drug delivery systems.
  • sustained release materials can also be found in the incorporated materials in Remington's Pharmaceutical Sciences.
  • HPLC column Waters Symmetry C8 50 x 4.6 mm, Conditions: a- MeCN/H 2 O 0.09% TFA, 0 to 100% (10 min); b- MeCN/H 2 O 0.09% TFA, 0 to 100% (20 min); Mass spectrum : Perkin Elmer API 150 EX (APCI); 1 H-NMR : Brucker DPX-300MHz.
  • a benzazole compound of formula I is admixed as a dry powder with a dry gelatin binder in an approximate 1:2 weight ration. A minor amount of magnesium stearate is added as a lubricant. The mixture is formed into 240-270 mg tablets (80-90 mg of active benzazole compound per tablet) in a tablet press.
  • a benzazole compound of formula I is admixed as a dry powder with a starch diluent in an approximate 1:1 weight ratio. The mixture is filled into 250 mg capsules (125 mg of active benzazole compound per capsule).
  • a benzazole compound of formula I (1250 mg), sucrose (1.75 g) and xanthan gum (4 mg) are blended, passed through a No. 10 mesh U.S. sieve, and then mixed with a previously prepared solution of microcrystalline cellulose and sodium carboxymethyl cellulose (11:89, 50 mg) in water.
  • Sodium benzoate (10 mg) flavor, and color are diluted with water and added with stirring. Sufficient water is then added to produce a total volume of 5 mL.
  • a benzazole compound of formula I is admixed as a dry powder with a dry gelatin binder in an approximate 1:2 weight ratio. A minor amount of magnesium stearate is added as a lubricant. The mixture is formed into 450-900 mg tablets (150-300 mg of active benzazole compound) in a tablet press.
  • a benzazole compound of formula I is dissolved in a buffered sterile saline injectable aqueous medium to a concentration of approximately 5 mg/ml.
  • JNK3 and/or 2 assays are performed in 96 well MTT plates, by incubation of 0.5 ⁇ g of recombinant, pre-activated GST-JNK3 with 1 ⁇ g of recombinant, biotinylated GST-c-Jun and 2 ⁇ M 33 ⁇ -ATP (2 nCi/ ⁇ l), in the presence or absence of benza-zole inhibitors and in a reaction volume of 50 ⁇ l containing 50 mM Tris-HCl, pH 8.0; 10 mM MgCl 2 ; 1 mM Dithiothreitol, and 100 ⁇ M NaVO 4 . The incubation is performed for 120 min.
  • Sympathetic Neuron Culture and Survival Assay Sympathetic neurons from superior cervical ganglia (SCG) of newborn rats (p4) are dissociated in dispase, plated at a density of 10 4 cells/cm 2 in 48 well MTT plates coated with rat tail collagen, and cultured in Leibowitz medium containing 5% rat serum, 0.75 ⁇ g/ml NGF 7S (Boehringer Mannheim Corp., Indianapolis, IN.) and arabinosine 10 5 M.
  • Cell death is induced at day 4 after plating by exposing the culture to medium containing 10 ⁇ g/ml of anti NGF anti-body (Boehringer Mannheim Corp., Indianapolis, IN.) and no NGF or arabinosine, in the presence or absence of benzazole inhibitors. 24 hours after cell death induction, determination of cell viability is performed by incubation of the culture for 1 hour, at 37°C in 0.5 mg/ml of 3-(4,5-dimethylthiazol-2-yl)2,5 diphenyl tetrazolium bromide (MTT). After incubation in MTT cells are resuspended in DMSO, transferred to a 96 MTT plate and cell viability is evaluated by measuring optical density at 590 nm.
  • anti NGF anti-body Boehringer Mannheim Corp., Indianapolis, IN.
  • MTT 3-(4,5-dimethylthiazol-2-yl)2,5 diphenyl tetrazolium bromide
  • JNK2 and 3 refer to the IC 50 (nM), i.e. the amount necessary to achieve 50% inhibition of said target (e.g. JNK2 or 3).
  • AS# denotes an exemplary test compound as set out with its number in the above examples. From the above table it could be derived that said test compounds according to formula I do have a significant effect both on JNK2 and more notabyl on JNK 3, but virtually no effect onto p38 and ERK2, thus delivering a quite selective inhibitory effect.

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EP99811207A EP1110957A1 (en) 1999-12-24 1999-12-24 Benzazole derivatives and their use as JNK modulators
AT00991229T ATE254123T1 (de) 1999-12-24 2000-12-20 Benzazolderivate und ihre verwendung als jnk modulatoren
NZ519423A NZ519423A (en) 1999-12-24 2000-12-20 Benzazole derivatives and their use as JNK modulators
PCT/EP2000/013006 WO2001047920A1 (en) 1999-12-24 2000-12-20 Benzazole derivatives and their use as jnk modulators
IL15034600A IL150346A0 (en) 1999-12-24 2000-12-20 Benzazole derivatives, their preparation and pharmaceutical compositions containing them
EEP200200318A EE05456B1 (et) 1999-12-24 2000-12-20 Bensasooli derivaadid ja nende kasutamine JNK modulaatoritena
DK00991229T DK1240164T3 (da) 1999-12-24 2000-12-20 Benzazolderivater og deres anvendelse som JNK-modulatorer
HU0204557A HU229625B1 (hu) 1999-12-24 2000-12-20 Benzazol-származékok, alkalmazásuk JNK-modulátorként, elõállításuk és ezeket tartalmazó gyógyszerkészítmények
BR0016911-0A BR0016911A (pt) 1999-12-24 2000-12-20 Derivados de benzazole, uso de derivados de benzazole, método para inibir a expressão e/ou atividade de jnk, método para tratamento de estados mórbidos mediado por jnk, composição farmacêutica contendo um derivado de benzazole e processo para a preparação de um derivado de benzazole
CZ20022169A CZ300984B6 (cs) 1999-12-24 2000-12-20 Benzazolové deriváty, jejich použití a farmaceutický prostredek
EP00991229A EP1240164B1 (en) 1999-12-24 2000-12-20 Benzazole derivatives and their use as jnk modulators
PT00991229T PT1240164E (pt) 1999-12-24 2000-12-20 Derivados de benzazol e seu uso como moduladores da jnk
AU31616/01A AU780241B2 (en) 1999-12-24 2000-12-20 Benzazole derivatives and their use as JNK modulators
YUP-492/02A RS51008B (sr) 1999-12-24 2000-12-20 Benzazolski derivati i njihova upotreba kao modulatora jnk
KR1020077008852A KR20070047853A (ko) 1999-12-24 2000-12-20 벤즈아졸 유도체 및 이의 jnk 조절자로의 용도
TR2003/02320T TR200302320T4 (tr) 1999-12-24 2000-12-20 Benzazol türevleri ve bunların jnk modülatörleri olarak kullanımları
UA2002065195A UA73151C2 (en) 1999-12-24 2000-12-20 Derivatives of benzosole and use thereof as modulators jnk
SK898-2002A SK287546B6 (sk) 1999-12-24 2000-12-20 Benzazolové deriváty, spôsob ich prípravy, farmaceutický prostriedok s ich obsahom a ich použitie
US10/168,718 US7259162B2 (en) 1999-12-24 2000-12-20 Benzazole derivatives and their use as JNK modulators
CA2394809A CA2394809C (en) 1999-12-24 2000-12-20 Benzazole derivatives and their use as jnk modulators
PL00356634A PL356634A1 (en) 1999-12-24 2000-12-20 Benzazole derivatives and their use as jnk modulators
SI200030254T SI1240164T1 (en) 1999-12-24 2000-12-20 Benzazole derivatives and their use as jnk modulators
MXPA02006242A MXPA02006242A (es) 1999-12-24 2000-12-20 Derivados de benzazolo y su uso como moduladores de jnk.
CNB008187045A CN1252067C (zh) 1999-12-24 2000-12-20 吲哚衍生物及其作为jnk调节剂的应用
EA200200708A EA007152B1 (ru) 1999-12-24 2000-12-20 Производные бензазола и их применение в качестве модуляторов jnk
TR2002/01509T TR200201509T2 (tr) 1999-12-24 2000-12-20 Farmasötik olarak aktif benzazol türevleri.
KR1020027007971A KR100736012B1 (ko) 1999-12-24 2000-12-20 벤즈아졸 유도체 및 이의 jnk 조절자로의 용도
ES00991229T ES2206351T3 (es) 1999-12-24 2000-12-20 Derivados de benzazol y su uso como moduladores de jnk.
DE60006580T DE60006580T2 (de) 1999-12-24 2000-12-20 Benzazolderivate und ihre verwendung als jnk modulatoren
JP2001549390A JP4782344B2 (ja) 1999-12-24 2000-12-20 ベンザゾール誘導体と、そのjnkモジュレータとしての利用法
ARP000106912A AR029215A1 (es) 1999-12-24 2000-12-22 Derivados de benzazol y tautomeros de los mismos utiles en el tratamiento de desordenes en los sistemas de autoinmunidad y neuronales, uso de dichos derivados en la preparacion de composiciones farmaceuticas aplicables en el tratamiento de dichos desordenes, metodo prar inhibir la expresion y/o acti
ZA200204427A ZA200204427B (en) 1999-12-24 2002-06-03 Benzazole derivatives and their use as JNK modulators.
HR20020496A HRP20020496B1 (en) 1999-12-24 2002-06-06 Benzazole derivatives and their use as jnk modulators
BG106830A BG65986B1 (bg) 1999-12-24 2002-06-18 Бензазолови производни и тяхното използване като jnk-модулатори
IL150346A IL150346A (en) 1999-12-24 2002-06-20 Benzazole derivatives, their preparation and pharmaceutical compositions containing them
NO20022997A NO323146B1 (no) 1999-12-24 2002-06-21 Benzazolderivater, deres anvendelse som JNK-modulatorer, farmasoytisk sammensetning som inneholder disse og fremgangsmate til fremstilling av derivatene,
HK03107978A HK1055730A1 (en) 1999-12-24 2003-11-05 Benzazole derivatives and their use as jnk modulators
US11/779,585 US7470686B2 (en) 1999-12-24 2007-07-18 Method of inhibiting the expression and/or the activity of JNK

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WO2003047570A1 (en) * 2001-12-07 2003-06-12 Applied Research Systems Ars Holding N.V. Benzazole derivatives for the treatment of scleroderma
WO2004098607A1 (en) * 2003-05-08 2004-11-18 Applied Research Systems Ars Holding N. V. Pyridinyl acetonitriles
WO2005026159A1 (en) * 2003-09-12 2005-03-24 Applied Research Systems Ars Holding N.V. Benzoxazole acetonitriles
WO2005026155A1 (en) * 2003-09-12 2005-03-24 Applied Research Systems Ars Holding N.V. Benzimidazole acetonitriles
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JP2010248205A (ja) * 2001-12-07 2010-11-04 Merck Serono Sa 強皮症の治療のためのベンザゾール誘導体
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US7465736B2 (en) 2002-06-14 2008-12-16 Laboratoires Serono S.A. Azole methylidene cyanide derivatives and their use as protein kinase modulators
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